The auction of promises saw big names pledge an hour of their time to raise money for their chosen charities.

Net-a-porter founder Natalie Massent and Topshop tycoon Sir Phillip Green were amongst the 8 ‘minds’ that pledged 60 minutes of their time to the highest bidder, alongside author Sir Salman Rushdie and music industry and talent show mogul Simon Cowell.

Live on-line bidding was fierce and the event raised a total of £78,500 for charities including: Fashion Targets Breast Cancer and The Autism Trust.

The ‘mind’ that attracted the highest bid was Simon Cowell’s who received the winning £19,000 bid from music industry rival Lucian Grainge, chairman of Universal Music. Simon donated the money to Children's Hospices for whom he is a patron.

Sir Philip Green raised £18,000 and was also one of the evening’s successful bidders, paying £11,000 to pick Arsenel manager Arsene Wenger’s brain.

Tara was snapped sipping Krug champagne at the event with Alexander Spencer-Churchill, both of whom are pictured in this week’s edition of Hello magazine (page 44.)